Setting Up A WirelessHARTNetworkPresenter
Steps for Planning a Wireless Project
1. Scope the project (objectives)• Monitoring or Control• Asset Management
2. Planning the Network (Best Practices)
• Segmentation and network capacity
• Geographic layout & P&ID’s3. Host Integration
• Integrate the gateway into the system
• Security • Commissioning
Scope the Project (Objectives)
• Process monitoringReduce Operator RoundsAd hoc low cost measurement to improve process visibilityHealth, safety, environmental monitoringOpen loop or non-critical control
• Asset MonitoringOptimize maintenance scheduleMonitor critical assets
Controller with bus (Modbus – Profibus Gateway connection
WirelessHART Instrument MESH
Gateway Gateway
Asset OptimisationEthernet connection
WirelessHART Instrument MESH
Gateway Gateway
AO WorkplaceCMMS
Device Location
• Locate Instruments based upon segmentation criteria
• Check coverage via scaled site drawing
• Locate repeaters as required
• The gateway can be moved into the plant (check certification)
• You could use directional or remote antennae
Understanding the Network Components
• One Network Manager
• Multiple Gateways (Only one per wireless network)
• Multiple Access Points per Gateway(for Redundancy and Throughput)
• Devices Per Access Point =Average Update Rate (Sec) X 30
1Sec AUR X 30 = 30 Devices60Sec AUR X 30 = 1800 Devices if faster update/more devices then add an Access Point!
AccessPoint
AccessPoint
GatewayWirelessHandheld
Network Manager
Security Manager
WirelessAdapter
HART-enabledField Devices
WirelessHARTField Devices
Process AutomationController
Host Application(e.g., Asset Management)
Host System Communication
• Industry Standard ProtocolsEthernet• Modbus TCPIP• OPC• FOUNDATION Fieldbus HSE• ProfiNet• Https• XML• VPN
Serial (RS232/RS485)• Modbus RTU• Profibus DP• HART/485
GatewayPLC/Controller
Wired Wireless
Ethernet
Fiber Optic
Serial
Bandwidth
Cyclic and Acyclic
GatewayPLC/Controller
Wired Wireless
Ethernet
Fiber Optic
Serial
Bandwidth
Cyclic and Acyclic
Host Data Capacity
• Serial Data CapacityData telegram size may have a limit (244 bytes Profibus DP)
• Controller I/O CapacityMay be based upon TAG limit or memory
• Gateway CapacityMay be designed for specific network size
10001001101
110
GatewayPLC/Controller
Wired Wireless
Ethernet
Fiber Optic
Serial
Bandwidth
Cyclic and Acyclic
GatewayPLC/Controller
Wired Wireless
Ethernet
Fiber Optic
Serial
Bandwidth
Cyclic and Acyclic
HCF Cooperates with WCTWirelessHART Mesh NetworkWirelessHART Mesh Network
Interface
CommunicationTechnology
CommunicationTechnology
Specified by WCT
Specified by the respective organization
Validated Specifications in 2009
Gateway
Accessing Cyclic Data
• Mapping PV to registers –Function blocks or modules
Gateway
Register TAG45001 TT101.PV45003 TT102.PV40005 PT506.PV45007 LT699.SV
Modbus RegisterMapping
Database RegisterTT101A 45001TT102A 45003PT506A 45005LT699A 45007
Modbus
System
Accessing Cyclic Data
• Mapping PV to registers –Function blocks or modules
Gateway
Module Device TAGM1 TT101.PVM2 TT102.PVM3 PT506.PVM4 LT699.SV
Profibus ModuleMapping in Gateway
Database Slave/Module
TT101A M1TT102A M2PT506A M3LT699A M4
Profibus DP
System
Accessing Cyclic Data
• Mapping PV to registers –Function blocks or modules
Gateway
TransducerBlock Device TAGTT101_TB.HART_PV TT101.PVTT102_TB.HART_PV TT102.PVTT506_TB.HART_PV PT506.PVTT699_TB.HART_SV LT699.SV
FF TransducerMapping in Gateway
Cyclic data access to
transducer block
System
HSE
4-20 mA Control Loop
Existing HART Device
Asset Management SystemExisting non-HART
Control System
WirelessHART Device• Battery Powered• Solar Powered• Field Powered
WirelessHARTAdapter WirelessHART
GatewayPV + HART DataPV + HART Data
HARTDATA
From Wired …To Wired + Wireless = WirelessHART
Establishing the Network
Control or Asset Management
System
WirelessHARTGateway
WirelessHART Mesh Network
Handheld Terminal
Summary
• Pick the appropriate “physical” connection• Select the appropriate protocol• Understand the constraints of the system
interface and gateway• Continuously monitor the network diagnostics